Arthur lamplough



{No Model.) 1 zsne et s-sheet 1.

A. LAMPLOU-GH V FASTENEE FOR THE M ETING-Rumor SASH'ES. No. 488,360. Patented Dec. 20, 1892.

2 Shee'ts-'- Sheet 2.

(No Model.)

A. LAMPLOUGH. v EASTENER FOR THE MEETING RAILS 0F SASHES. I No. 488,360.

Patented Dec. 20, 1892.

liq- 370257".

Warren States Patent Orr-ion.

ARTHUR LAMPLOUGH, OF LONDON, ENGLAND, ASSIGNOR TO PERCY WOOD,

. OF SAME PLACE.

FASTENER FOR'THE MEETING-RAILS OF SASHES.

SPECIFICATION forming part of Letters Patent No. 488,360, dated December 20, 1892. Application filed November 24:, 1891. Serial No. 412.978- (No model.)

.To all whom it may concern.-

Be it known that I, ARTHUR LAMPLOUGH, a subject of the Queen of Great Britain, residing at London, in the county of Middlesex, England, have invented a new and useful Sash- Fastener, of which the following is a specification.

This invention consists of a new or improved sash fastener which is not only cheap in construction and efficient in use, but is practically burglar proof and in addition to serving as a fastener prevents the sashes from rattling or shaking.

The form of sash fastener constituting the present invention consists essentially of two pieces which for the purpose of this specification I shall hereinafter refer to as the bolt- ,piece and the ring-piece. The bolt-piece consists essentially of two parts a support or standard and a gravity catch. The ring-piece consists of a single piece of metal somewhat resembling a ring in shape so as to embrace the bolt-piece or a part thereof. These two pieces are placed on the sash rails in such manner that when the window is closed the gravity catch falls slightly forward by gravity so as to overhang the lower sash and so prevent its being pushed upward, while the ring-piece embracing the bolt-piece hugs it close so as to press the two sashes together and so not only prevent their rattling but also prevent the insertion of a burglars knife.

Having now described the generic features of my invention in general terms and so defined its scope I shall proceed to describe my invention more in detail and for that purpose I shall refer to the accompanying sheets of drawings which illustrate two specific forms of my invention, the said forms being those which I have hitherto found to give the best results in practice.

In the drawings Figure 1 is a front elevation Fig. 2 a plan and Fig. 3 a side elevation of one form of my complete sash fastener. Fig. 4c is also a side elevation with the boltpiece and the ring-piece shown separate as they are when the window is open; Fig 5 is a plan of the ring-piece shown separately. Fig. 6 is a side elevation of a modified form of my bolt piece, and Fig. 7 a side elevation of the gravity catch therein.

In the figures similar letters of reference refer to similar parts.

Referring to Figs. 1 to 5 inclusive A is the standard or support. It consists of a single piece of metal, usually a casting of brass or iron, resembling an inverted letter T, and with a vertical slot f therein. In this slot hangs by the pin or rivet b the gravity catch B. The catch B which consists of a flat plate is suspended so as to normally hang forward as shown in Figs. 3 and 4. In practice I generally provide this plate with a head or projection I) as shown to prevent the plate coming too far forward. The lower part a of the support A I cause to bulge outward as shown in Figs. 2, 3 and 4 for a purpose hereinafter to be mentioned. 0 is the ring-plate usually a solid casting. The part c constitutes a flat plate which prevents injury to the sash rail if the lower sash be pulled up to try to open the window before the catch-plate B is pushed back. 0' is an arched part or jaw of the ringpieoe O which serves to embrace the boltpiece. D is the lower rail of the upper sash and E the upper rail of the lower sash.

The action of my invention will now be easily understood. Let us assume that the window is open to a certain extent as shown in Fig. 4 and that the window is now to be closed by pulling down the lower sash. The

ring-piece will now embrace-and surround the bolt-piece and when the jaw 0 reaches the bulging part a, the ring-piece will begin to hug the bolt-piece, and will hug it the more tightly the farther it descends. At the same time the catch-plate will be pressed backward by the part c of the ring-piece until the said catch-plate occupies the position shown by the dotted lines in Fig. 3. When the lower sash has reached the end of its downward course the catch-plate will be free to fall forward into the position shown in full lines in Fig. 3 and the ring-piece will tightly hug the support of the bolt-piece so as to press the twosashes closely together. In this the closed position, it will be seen that the lower sash cannot be raised from the outside as any exertion to effect this would simply cause a to press ineffectually against the catch-plate B, while the two sashes are so closely pressed together that they cannot shake or rattle and will not admit a knife or tool between them. To open the window it is only necessary to press back the catch plate with the finger when the window can be easily opened.

Fig. 6 is a modified form of bolt-piece. It differs from that already described in that instead of its standard or support A having a limited bulging part a the whole standard is made to taper at this surface so that an inclined plane extends from the top to the base. This it will be seen is a construction equivalent to that just described. The gravity-catch shown in Fig. 7 differs from that shown in the previous figures in that instead of having a head I) to prevent movement too far forward it has a notch 19 cut on its lower edge which notch comes in contact with the part c of the ring-piece when the window is closed. 0 c are two side wings springing upward from the ring-piece which I sometimes find it advantageous to employ though they are not necessary. Besides serving as an additional protection against a burglars tool they are convenient for raising the lower sash. For this purpose the first and third finger may be pressed under the turned over parts of these wings while the second finger presses the catch-plate backward.

What I claim and desire to secure by Letters Patent is:-

1. A sash fastener comprising a vertical standard mounted upon one sash and having at its rear an inclined or bulging surface and provided with a gravity-catch swinging outwardly from the front face of the standard and adapted to automatically engage and lock with the other sash or a fixture thereon, combined with an arm or ring-piece fixed upon the other sash and projecting therefrom for engaging the said inclined or bulging surface upon the back of the standard, substantially as set forth.

2. In a sash-fastener, the combination of a catch or lock mounted upon the meeting rails of the sashes, and a hook-shaped or curved guard c projecting laterally from each side of the catch or lock with its free end curving upwardly and outwardly and arranged with its shank or stem at right-angles across the meeting line of the sashes, whereby a blade entered between the sashes from the exterior thereof in attempting to pick the lock may be caught and held, substantially as described.

8. In a sash fastener, the combination with the catch for locking the parts together, of the ring-piece 0 provided with the upwardly and outwardly curved or flaring wings or guards c 0 serving as guards for the catch and as handles or finger-pieces in raising the sash.

ARTHUR LAMPLOUGH.

Witnesses:

JAMES GIVEN LORRAIN, ERNEST ELKINGTON. 

